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\frac{77x}{2}
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\frac{77x}{2}
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\frac{1}{2}x\times 77
Add 64 and 13 to get 77.
\frac{77}{2}x
Multiply \frac{1}{2} and 77 to get \frac{77}{2}.
\frac{1}{2}x\times 77
Add 64 and 13 to get 77.
\frac{77}{2}x
Multiply \frac{1}{2} and 77 to get \frac{77}{2}.
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